Asp.net对文件夹和文件的操作类

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夹
FileInfo CreateFile =new FileInfo(System.Web.HttpContext.Current.Server.MapPath

(FilePathName).ToString()); //创建文件
if(!CreateFile.Exists)
{
FileStream FS=CreateFile.Create();
FS.Close();
}
}
catch
{
}
}
/**////
/// 删除整个文件夹及其字文件夹和文件
///
///
public void DeleParentFolder(string FolderPathName)
{
try
{
DirectoryInfo DelFolder = new DirectoryInfo(System.Web.HttpContext.Current.Server.MapPath

(FolderPathName).ToString());
if(DelFolder.Exists)
{
DelFolder.Delete();
}
}
catch
{
}
}
/**////
/// 在文件里追加内容
///
///
public void ReWriteReadinnerText(string FilePathName,string WriteWord)
{
try
{
//建立文件夹和文件
//CreateFolder(FilePathName);
CreateFile(FilePathName);
//得到原来文件的内容
FileStream FileRead=new FileStream(System.Web.HttpContext.Current.Server.MapPath

(FilePathName).ToString(),FileMode.Open,FileAccess.ReadWrite);
StreamReader FileReadWord=new StreamReader(FileRead,System.Text.Encoding.Default);
string OldString = FileReadWord.ReadToEnd().ToString();
OldString = OldString + WriteWord;
//把新的内容重新写入
StreamWriter FileWrite=new StreamWriter(FileRead,System.Text.Encoding.Default);
FileWrite.Write(WriteWord);
//关闭
FileWrite.Close();
FileReadWord.Close();
FileRead.Close();
}
catch
{
// throw;
}
}

/**////
/// 在文件里追加内容
///
///
public string ReaderFileData(string FilePathName)
{
try
{

FileStream FileRead=new FileStream(System.Web.HttpContext.Current.Server.MapPath

(FilePathName).ToString(),FileMode.Open,FileAccess.Read);
StreamReader FileReadWord=new StreamReader(FileRead,System.Text.Encoding.Default);
string TxtString = FileReadWord.ReadToEnd().ToString();
//关闭
FileReadWord.Close();
FileRead.Close();
return TxtString;
}
catch
{
throw;
}
}
/**////
/// 读取文件夹的文件
///
///
///
public DirectoryInfo checkValidSessionPath(string FilePathName)
{
try
{
DirectoryInfo MainDir = new DirectoryInfo(System.Web.HttpContext.Current.Server.MapPath

(FilePathName));
return MainDir;

}
catch
{
throw;
}
}
}
}